Americans like to pretend we live in a meritocracy, even when the Black Lives Matter movement smacks us in the face with evidence that we don't. The education system is similar. We pretend that if you apply yourself and work hard, you will succeed in school and life. In reality, it's hard to deny that what school you attended mattered as much as how hard you worked.
The STAAR was a reaction to that. STAAR, for those who might not know, is the school system's standardized test used by the State of Texas. It claimed to identify failing schools, which could then be targeted to change the educational outcomes for many students. George W Bush ran for and won the Presidency in part on his championing education reform that led to STAAR. The result was the No Child Left Behind Act of 2002. Remember that? It was broadly popular once. Now? Not so much. What changed?